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by Ajedrecista
Fri Jul 19, 2019 5:24 pm
Forum: Computer Chess Club: General Topics
Topic: Math question
Replies: 34
Views: 3795

Re: Math question.

Hello: Given the big difference of played games of the 'Big Four' (43.18%, 36.48%, 10.57% and 8.08%), I obtain plausible weights IMHO although the math is not so simple. You can tweak the parameters z and a . z ~ 1.96 or z = 2 are pretty standard, but a is more subjective and susceptible of being te...
by Ajedrecista
Thu Jul 18, 2019 6:10 pm
Forum: Computer Chess Club: General Topics
Topic: Math question
Replies: 34
Views: 3795

Re: Math question.

Hello again: Taking the same idea than in my previous post , but using the lower bound of Wilson score interval of µ (without or with continuity correction) instead of µ, I obtain the following weights with your data: Opening Book : books\elo2700.bin Positions : 716.101 Book Weight Score Depth Learn...
by Ajedrecista
Wed Jul 17, 2019 7:22 pm
Forum: Computer Chess Club: General Topics
Topic: Math question
Replies: 34
Views: 3795

Re: Math question.

Hello Ed: I worked a little in an own method which could be unsound but gives some results that may suit your needs: For each i-th opening move: n_i = w_i + d_i + l_i µ_i = (w_i + 0.5*d_i)/(w_i + d_i + l_i) q_i = µ_i * (n_i)^a Weight_i = q_i / SUM(q_i) // SUM(Weight_i) = 100% Using your input values...
by Ajedrecista
Tue Jul 16, 2019 7:55 pm
Forum: Computer Chess Club: General Topics
Topic: Math question
Replies: 34
Views: 3795

Re: Math question.

Hello Ed: While this works reasonable well in practice the numbers of losses is not part of the calculation and actually it should. I think that the number of loses is hidden in (2*won+draw)*100 / (2*total_win+total_draw). Let me explain. Try the following: For each i-th opening move: n_i = w_i + d_...
by Ajedrecista
Fri Jul 12, 2019 7:23 am
Forum: Computer Chess Club: General Topics
Topic: Winning endgame for black?
Replies: 4
Views: 826

Re: Winning endgame for black?

Hello: I'm downloading KRBNPvKQ and KRBNvKQP table that might turn the tide of analysis. Good luck! Assuming that you have all sub-7 tablebases, don't forget the pawnless tablebases related to KRBNPvKQ and KRBNvKQP, that is, if the pawn promotes and is not captured. http://tablebase.lichess.ovh/tabl...
by Ajedrecista
Mon Jul 08, 2019 6:11 pm
Forum: Computer Chess Club: General Topics
Topic: Evidence that the release of Houdini 7 is imminent?
Replies: 20
Views: 4427

Re: Evidence that the release of Houdini 7 is imminent?

Hello Gary: https://lichess.org/@/Houdini_x64bit It's only been a member of Lichess since 30 June 2019. Who knows if that account is real or troll. Anyway, here is more material: https://lichess.org/forum/team-lichess-bots/how-to-make-your-bot-more-powerful#10 Use Houdini 7.01 [...] (Being released ...
by Ajedrecista
Fri Jul 05, 2019 7:17 am
Forum: Computer Chess Club: General Topics
Topic: Fireworks for the Fourth
Replies: 17
Views: 2127

Re: Fireworks for the fourth.

Hello: [...] [Event "50m/10m"] [Date "2019.06.11"] [Round "1"] [White "CyberNezh"] [Black "Amyan 1.72"] [Result "1-0"] [ECO "C06"] [BlackElo "2600"] [PlyCount "77"] [EventDate "2019.??.??"] 1. e4 e6 2. d4 d5 3. Nd2 Nf6 4.e5 Nfd7 5. c3 c5 6. Bd3 cxd4 7. cxd4 Nc6 8. Ne2 f6 9. f4 fxe5 10. fxe5 Nxd4 11....
by Ajedrecista
Sat Jun 22, 2019 10:54 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: which engine should win
Replies: 2
Views: 590

Re: Which engine should win?

Hello: which engine should win in a ten game 5 minute blitz tournament: Komodo 13.02, Shashchess 8, Stockfish 10, or SugaR XPro 1.6.1? Every thing is pretty much default; threads = 4. All engines x64. There is a Round-Robin simulator that can simulate the outcome of a Round-Robin tournament with som...
by Ajedrecista
Thu Jun 13, 2019 5:37 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: max number of pseudo legal move
Replies: 29
Views: 4825

Re: Maximum number of pseudo legal moves.

Hello Roland: [...] By the way, the official JetChess web page no longer exists. Would you know another place where one can download it? The web is still reachable with the help of Wayback Machine: https://web.archive.org/web/20171119065123/zipproth.de/jetchess The direct link of the download works ...
by Ajedrecista
Tue Jun 11, 2019 8:58 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: max number of pseudo legal move
Replies: 29
Views: 4825

Re: Maximum number of pseudo legal moves.

Hello Mike: [...] Real world, from real games , not proof games, the record as far I know is 79 moves. I performed a search once , using a move generator on 1 million games and found a game with 78 possible moves . I posted the game here, years ago - maybe 10 to 13 years ago. The real game record: h...